Select 'Campaigns' from the top menu and select all the campaigns in the list.

Next select 'Pause' (or delete) from the 'Edit' drop down menu.(see screenshot)

This will ensure that none of your adverts are displaying.

If you need to cancel your account you can call Google AdWords UK & Ireland on 0800 169 0409 and entering your Customer ID that can be found in the top right hand corner of your account after you login.

Select 'Campaigns' from the top menu and select all the campaigns in the list.

Next select 'Pause' (or delete) from the 'Edit' drop down menu.(see screenshot)

This will ensure that none of your adverts are displaying.

If you need to cancel your account you can call Google AdWords UK & Ireland on 0800 169 0409 and entering your Customer ID that can be found in the top right hand corner of your account after you login.